River and tidal turbine with power control

A control gear assembly for controlling variable rotational speed input to the control gear assembly to be greater than or equal to a constant rotational speed output of the control gear assembly, the control gear assembly for outputting a predetermined value of renewable electric energy, the control gear assembly comprising:

• a renewable energy harnessing module designed to harness renewable energy from the flow of water current, the renewable energy harnessing module requiring a depth of water and a speed of water to capture the predetermined value of electric energy for delivery to a load,
• a renewable energy harnessing module input shaft from the renewable energy harnessing module, the renewable energy harnessing module being designed for a specific location on a river or a tidal estuary, the renewable energy module input shaft for receiving the variable rotational speed input, the variable rotational speed input received from the renewable energy harnessing module for delivery via a renewable energy harnessing module gearbox to a first sun gear and a second middle sun gear of a simplified spur gear assembly input shaft,
• the simplified spur gear assembly input shaft having the first sun gear and the second middle sun gear, the second middle sun gear meshing with a first wide planetary gear of a first pin connecting first and second carrier discs of a simplified spur gear assembly, the first wide planetary gear of the first pin having a width greater than widths of either of third and fourth planetary gears of a second pin opposite the first pin, the first and second pins connecting the first and second carrier discs,
• width of the first, second and third planetary gears being measured in a direction of the first and second pins,
• a carrier and pin assembly of the simplified spur gear assembly including the first and second carrier discs, the first pin supporting the first wide planetary gear meshed with the middle sun gear of the simplified spur gear assembly input shaft having the first sun gear and the middle sun gear, and the second pin opposite the first pin supporting the third and fourth planetary gears,
• the second pin supporting the third and fourth planetary gears being opposite the first pin supporting the first wide planetary gear,
• a sun gear/sleeve/extension disc surrounding the simplified spur gear assembly input shaft having the first sun gear and the middle sun gear, the sun gear/sleeve/extension disc located at an output of the simplified spur gear assembly and an extension disc/sleeve/sun gear surrounding the simplified spur gear assembly input shaft having the first and the middle sun gear at a control motor input of the simplified spur gear assembly, the sun gear/sleeve/extension disc meshing with an output gear box providing an output via an output shaft,
• extension disc/sleeve/sun gear receiving a constant rotational speed control input via a control motor input shaft from a control motor through a gearbox providing the control motor input,
• the output shaft connected to a generator for outputting the predetermined value of renewable electric energy to a load.